obama at 45%. that's a significant shift from only a few weeks ago. same poll, likely voters at obama 51%. romney, 43%. that's a dramatic shift indeed. let's get the reaction, jim acosta is traveling with the republican presidential nominee. what are they saying, jim? >> reporter: wolf, i can tell you right now that mitt romney is standing behind me addressing an understandably small crowd of supporters here at newport news, virginia, it is raining buckets here. but that's not dampening the enthusiasm of the romney campaign. they feel very good about this poll that just came out from the pew research center, showing a four-point lead among likely voters for mitt romney over the president. that is a kind of poll that they have not seen in some time. so they're very happy about that. i got some instant response from a senior romney official who told me over an e-mail a few moments ago that they are encouraged by the enthusiasm that they're seeing from supporters who they call energized. we have been seeing that over the last several days at various camp